Transvenous intracardiac pacing catheter

An electrode system connectable to a pacemaker for sequentially pacing both the atrium and ventricle of a human heart comprising:

• a plurality of insulated electrical leads comprising a first set of three ventricle leads and a second set of four atrium leads, a ventricular sheath over the ventricle leads and an atrial sheath over the atrium leads, the ventricular sheath and the atrial sheath disposed inside an outer catheter sheath
• the ventricular sheath being retractable from the ventricle leads to deploy the ventricle leads in the ventricle, each of the three ventricle leads having a resiliency and shape to be deployed in contact with the ventricle when the ventricular sheath is retracted therefrom,
• the atrial sheath being retractable from the atrium leads to deploy the atrium leads in the atrium, each of the four atrium leads having the resiliency and shape to be deployed in contact with the atrium when the sheath is retracted therefrom
• the atrium and ventricle leads being capable of both stimulating and sensing the ventricle and atrium and capable of providing dual chamber control of the heart,
• wherein the outer catheter sheath has a distal portion and a proximal portion, the proximal portion of the outer catheter sheath having a Tuohy-Borst access connector, a deployment stop, and a terminal connection for the leads.